An atheist group in in Charlotte, N.C., put up two huge billboards Monday ridiculing Christianity and Mormonism.
The billboard against Christianity calls God "sadistic" and "useless," while the display against Mormonism calls God a "space alien."
The outdoor advertisements have angered many people of faith who say they want to see them taken down.
David Silverman, president of American Atheists, said the controversy is exactly what he expected.
He claimed his group posted the billboards in time for the upcoming Democratic National Convention.
"We're using our First Amendment rights to ridicule the silliness of religion," Charlotte's WSOC-TV quoted Silverman. "If they see this as an attack that's fine, what we're doing here is raising the awareness of the silly parts of these religions. So that people can ask themselves, 'Do we want this type of person in the White House.'"
Charlotte resident Timothy Doe said the display "puts a black eye on Charlotte."
"This is backwards because if it was just about politics, then he wouldn't have put that up," Doe said. "Then let the issues be heard, put up something about healthcare or something."
American Atheists paid $15,000 for the two billboards, which will stay up for the next month. The Democratic National Convention begins Sept. 4.